# Nagios XI

> Enterprise infrastructure monitoring with auto-discovery, SNMP and customisable dashboards.

Nagios XI is an enterprise-grade infrastructure monitoring platform from Nagios Enterprises, monitoring servers, networks, cloud and hybrid environments via SNMP. Priced per node starting at $2,595 per year (checked September 2026) for a 100-node Standard licence, with a free tier for up to 7 nodes. Listing updated 6 September 2026. Checked by MSP Software 5 September 2026.

- Page: https://mspsoftware.net/software/nagios-xi
- Vendor: Nagios Enterprises, https://mspsoftware.net/vendors/nagios, website https://www.nagios.com/products/nagios-xi/
- Categories: Network monitoring (primary)
- Free trial: no. Free version: yes.
- Deployment: on-premises. Platforms: Linux and web. HQ: United States. Founded: 1999.
- Support: email, phone and knowledge base. Training: documentation and videos.

## From the vendor

Nagios XI is an enterprise infrastructure monitoring solution from Nagios Enterprises for monitoring physical, virtual and cloud servers, network devices, and applications across hybrid environments. The platform excels at automatic network discovery with SNMP monitoring of routers, switches and network devices, complemented by configuration snapshots for tracking infrastructure changes over time and bandwidth monitoring with intelligent threshold alerting. It includes 70+ configuration wizards for quick setup without manual file editing, custom dashboards with graphs, status displays and network maps, and event handlers for automatic remediation scripting when problems occur. Distributed scaling is available through Mod-Gearman, allowing large deployments to distribute active checks across multiple Linux workers. The web-based console runs on Linux servers (RHEL, CentOS, Ubuntu, Debian) with monitoring data kept on-premises, addressing MSPs and enterprises that require control over their monitoring infrastructure and organisations with strict data residency compliance requirements. Nagios XI pricing is published per node on an annual basis, starting at $2,595 per year (checked September 2026) for a 100-node Standard licence, with tiers scaling to $14,995 for 1,000 nodes. An Enterprise edition add-on provides SLA reporting, business process intelligence, capacity planning and audit logging, starting at $4,690 annually (checked September 2026). The company also offers a free tier limited to 7 nodes or 100 services for smaller deployments or evaluation, and a Sitewide option for organisations running multiple unlimited-node instances. Nagios integrates with complementary products in the Nagios suite, including Log Server for centralised log management, Network Analyzer for NetFlow analysis and bandwidth trending, plus open API access for custom integrations with existing infrastructure tools. MSPs should confirm which Nagios XI tier (Standard or Enterprise) includes the specific monitoring features they need, and verify on-premises Linux server requirements and capacity planning for their deployment.

## Our take

Nagios XI suits enterprises and larger MSPs who control their own monitoring infrastructure and want a node-based licensing model with predictable costs, rather than metrics-based pricing. It stands out for auto-discovery, SNMP monitoring and customisable dashboards, making it useful for diverse infrastructure estates. However, wireless monitoring, topology mapping and multi-site dashboards were not documented as core features in published materials. The free 7-node tier is useful for evaluation. Compare against Zabbix (open source), PRTG (also SNMP-based, different pricing) and Auvik (cloud-first approach) to confirm fit for your network size and deployment model.

## Pricing

Nagios XI starts at US$2,595.00 per network_device per year, according to the vendor (pricing page: https://www.nagios.com/products/nagios-xi/pricing/).

| Plan | Price | Per | Highlights |
| --- | --- | --- | --- |
| Standard | US$2,595.00 | network_device per year | 100-node licence, Infrastructure monitoring, 70+ configuration wizards, Custom dashboards, SLA measurement |
| Enterprise | US$4,690.00 | network_device per year | All Standard features, SLA reporting, Business process intelligence, Capacity planning, Bulk modification tools |

## Features

| Feature | Supported | Note |
| --- | --- | --- |
| Automatic network discovery | yes | Automatic network discovery maps infrastructure without manual configuration |
| Device configuration backup | yes | Configuration snapshots allow comparison and rollback of changes |
| Uptime and outage alerting | yes | Intelligent alerting and escalation policies with event handlers |
| Bandwidth monitoring | yes | Bandwidth monitoring with threshold alerts and performance trending |
| SNMP support | yes | Monitor routers, switches and network devices using SNMP protocols |
| Configuration change detection | yes | Configuration snapshots enable change tracking and rollback |

## Integrations

- Nagios Log Server, https://www.nagios.com/products/nagios-log-server/
- Nagios Network Analyzer, https://www.nagios.com/products/nagios-network-analyzer/
- Nagios Fusion, https://www.nagios.com/products/nagios-fusion/

## Alternatives

- LibreNMS: Open-source network monitoring with automatic discovery, alerting and distributed polling. https://mspsoftware.net/software/librenms. Compare: https://mspsoftware.net/compare/librenms-vs-nagios-xi
- Domotz: Network monitoring and remote device access through a software or hardware probe with per-collector pricing. https://mspsoftware.net/software/domotz. Compare: https://mspsoftware.net/compare/domotz-vs-nagios-xi
- Checkmk: Infrastructure monitoring for hybrid environments, Community free or from €190 per month. https://mspsoftware.net/software/checkmk. Compare: https://mspsoftware.net/compare/checkmk-vs-nagios-xi
- PRTG Network Monitor: Sensor-based network monitoring with a free tier and subscriptions from 200 dollars per month. https://mspsoftware.net/software/prtg. Compare: https://mspsoftware.net/compare/nagios-xi-vs-prtg

## FAQ

### How much does Nagios XI cost?

Nagios XI starts at US$2,595.00 per network_device per year, according to the vendor, checked September 2026.

### Does Nagios XI offer a free trial?

Nagios XI does not offer a free trial. There is a genuinely free version.

### What does Nagios XI integrate with?

Nagios XI lists integrations with Nagios Log Server, Nagios Network Analyzer and Nagios Fusion.

### Is Nagios XI cloud or on-premises?

Nagios XI is installed on-premises.

### Who is Nagios XI for?

MSPs report using Nagios XI at sizes of 51-200 and 200+ technicians.

### Does Nagios XI include a free version or trial?

Nagios XI offers a genuinely free tier limited to 7 nodes or 100 services, whichever limit is reached first. This free edition includes most Standard features but does not include support or premium features. There is no separate time-limited trial; the free tier is permanent for qualifying deployments. Organisations needing more than 7 nodes must purchase a Standard or Enterprise licence.

### How is Nagios XI priced?

Nagios XI is priced per node (unique IP address or monitored URL) on an annual basis. Standard edition starts at $2,595 per year for a 100-node licence, scaling to $14,995 for 1,000 nodes. Enterprise edition adds SLA reporting, business process intelligence and capacity planning, priced from $4,690 (100-node) to $17,090 (1,000 nodes). All paid licences include a Customer Success Manager for the first year. Sitewide licences for multiple unlimited-node instances require contacting sales.

### What monitoring protocols does Nagios XI support?

Nagios XI supports SNMP monitoring for network devices including routers, switches and infrastructure hardware, with automatic network discovery. It monitors servers (physical, virtual and cloud), Linux and Windows systems, applications, databases and containers. The platform is highly extensible - any executable that returns an exit code works as a monitoring check, allowing custom checks for proprietary systems and services.

### Does Nagios XI require cloud hosting or can it be self-hosted?

Nagios XI runs entirely on-premises on customer-controlled Linux servers (RHEL, CentOS, Ubuntu, Debian). It does not require cloud hosting and is designed so your monitoring data never leaves your infrastructure, which suits air-gapped environments and organisations with strict data residency requirements. This also means licensing is based on nodes rather than metrics volume or data consumption.

### How does Nagios XI compare with other network monitoring platforms?

Nagios XI differs from cloud-first platforms like Auvik in being entirely on-premises with predictable per-node pricing rather than per-device cloud pricing. Compared with PRTG (also SNMP-based and on-premises), Nagios XI emphasises extensibility through scripting and open APIs, with 70+ built-in configuration wizards for quick setup. Unlike open-source Zabbix, Nagios XI includes commercial support and pre-built integrations, though Zabbix is free. MSPs should evaluate whether they prefer node-based annual licensing versus per-user or per-metric pricing models.